<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport"
        content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <title>关闭淘宝二维码案例</title>
  <style>
    .box {
      position: relative;
      width: 74px;
      height: 88px;
      border: 1px solid #ccc;
      margin: 100px auto;
      font-size: 12px;
      text-align: center;
      color: #f40;
      /* display: block; */
    }

    .box img {
      width: 60px;
      margin-top: 5px;
    }

    .close-btn {
      position: absolute;
      top: -1px;
      left: -16px;
      width: 14px;
      height: 14px;
      border: 1px solid #ccc;
      line-height: 14px;
      font-family: Arial, Helvetica, sans-serif;
      cursor: pointer;
    }
  </style>
</head>
<body>
  <div class="box">
    淘宝二维码
    <img src="images/tao.png" alt="">
    <i class="close-btn">×</i>
  </div>
  <script>
    // 1. 获取元素
    var btn = document.querySelector('.close-btn')
    var box = document.querySelector('.box')
    // 2.注册事件 程序处理
    btn.onclick = function () {
      box.style.display = 'none'
    }
  </script>
</body>
</html>